Move more complex initializations from main class to Initializer helper (tentative)

src/main/java/fr/xephi/authme/util/BukkitService.java

@@ -14,7 +14,6 @@ import org.bukkit.scheduler.BukkitRunnable;
 import org.bukkit.scheduler.BukkitScheduler;
 import org.bukkit.scheduler.BukkitTask;
 
-import javax.inject.Inject;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.util.Arrays;
@@ -37,8 +36,7 @@ public class BukkitService {
     private final boolean getOnlinePlayersIsCollection;
     private Method getOnlinePlayers;
 
-    @Inject
-    BukkitService(AuthMe authMe) {
+    public BukkitService(AuthMe authMe) {
         this.authMe = authMe;
         getOnlinePlayersIsCollection = initializeOnlinePlayersIsCollectionField();
     }
@@ -113,17 +111,18 @@ public class BukkitService {
      * <b>Asynchronous tasks should never access any API in Bukkit. Great care
      * should be taken to assure the thread-safety of asynchronous tasks.</b>
      * <p>
-     * Returns a task that will run asynchronously after the specified number
-     * of server ticks.
+     * Returns a task that will repeatedly run asynchronously until cancelled,
+     * starting after the specified number of server ticks.
      *
      * @param task the task to be run
-     * @param delay the ticks to wait before running the task
+     * @param delay the ticks to wait before running the task for the first
+     *     time
+     * @param period the ticks to wait between runs
      * @return a BukkitTask that contains the id number
-     * @throws IllegalArgumentException if plugin is null
      * @throws IllegalArgumentException if task is null
      */
-    public BukkitTask runTaskLaterAsynchronously(Runnable task, long delay) {
-        return Bukkit.getScheduler().runTaskLaterAsynchronously(authMe, task, delay);
+    public BukkitTask runTaskTimerAsynchronously(Runnable task, long delay, long period) {
+        return Bukkit.getScheduler().runTaskTimerAsynchronously(authMe, task, delay, period);
     }
 
     /**

src/main/java/fr/xephi/authme/util/Utils.java

@@ -57,4 +57,20 @@ public final class Utils {
     public static String getPlayerIp(Player p) {
         return p.getAddress().getAddress().getHostAddress();
     }
+
+    /**
+     * Returns whether the class exists in the current class loader.
+     *
+     * @param className the class name to check
+     *
+     * @return true if the class is loaded, false otherwise
+     */
+    public static boolean isClassLoaded(String className) {
+        try {
+            Class.forName(className);
+            return true;
+        } catch (ClassNotFoundException e) {
+            return false;
+        }
+    }
 }